Large size two-hole bound states in t-J model

Details Large size two-hole bound states in t-J model Large size two-hole bound states in t-J model

1994-03-11

arxiv.org/abs/cond-mat/9403044v1

Physica C 218 (1993) 197

Physics

Condensed Matter

23 pages, REVTEX 3.0, 6 PostScript pictures appended, Physica C 218 (1993) 197-207

Scientific paper

10.1016/0921-4534(93)90283-V

Several series of shallow large-size ($l \gg lattice~ spacing$) two-hole bound states are found in the two-dimensional t-J model. Their binding energies depend exponentially on the inverse value of the hole-spin-wave coupling constant. Their parity is connected with the angular wave function in a nonstandard way. The possible role of these states in the formation of superconducting pairing is considered.

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